The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1993
Filed:
Dec. 31, 1992
Applicant:
Inventors:
Ludwig Leipold, Munich, DE;
Rainald Sander, Munich, DE;
Jenoe Tihanyi, Munich, DE;
Roland Weber, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
307125 ; 307 108 ; 315 82 ; 315131 ; 340642 ;
Abstract
A circuit for detecting the non-operating condition of a load which is connected in series with an electronic switch wherein a comparator has a first input which is connected to the junction point between the load and the electronic switch and has a second input which is a reference voltage such that when the load fails the comparator produces an output to indicate such condition and wherein the reference voltage is lower than the normal voltage when the load is operating properly and is higher than when the load is in the inoperative condition.